It's official - last dairy season is the best ever on record, latest figures from Livestock Improvement Corporation and DairyNZ show.

The 2011-12 season will go down in history as the most productive ever thanks to high pasture growth, with milk flows rising by 11.3 per cent on the previous year.

In other milestones, average production per cow hit a new record of 364 kilograms of milksolids, and milk production per hectare set a new record of 1028kg - beating the 1000kg mark for the first time.

The figures are posted in 2011-12 New Zealand Dairy Statistics, a report jointly released by LIC, a dairy genetics co-operative company, and DairyNZ, the industry good organisation.